Tasua and Asyura Fasting Schedule for 2026 in Indonesia

NU calendar moves one day later

Nahdlatul Ulama’s Falakiyah Institute sets the beginning of Muharram 1448 H one day later. That pushes Tasua to Thursday, June 25, 2026, and Asyura to Friday, June 26, 2026.

The one-day difference is not unusual. It comes from how Islamic calendar experts calculate the start of the month, using rukyat and hisab methods that can lead to different results. For worship, that difference does not create a problem. It simply means Muslims follow the authority or organization they already trust.

"This difference in schedule is a normal part of determining the Hijri calendar. Muslims may observe worship according to the rulings of the organization they follow," religious authorities often explain when Ramadan and other Hijri dates do not line up exactly.

Why Asyura fasting carries weight

Asyura fasting has a special place in Islamic practice. The Prophet Muhammad said, "Fasting on the day of Asyura, I hope from Allah that it will expiate the sins of the previous year" (HR Muslim). The narration gives the day a strong spiritual weight, especially for Muslims looking to begin Muharram with worship.

Tasua matters too. The Prophet recommended fasting the ninth day as a companion to Asyura after arriving in Medina and finding Jews fasting on the tenth of Muharram. Muslims were encouraged to add a day, making the observance distinctive. That is why many Indonesians try to fast both days when they can.

The practice is straightforward: fast on the ninth, then the tenth. If someone cannot manage both days, fasting on Asyura alone still carries its virtue. No complicated ritual. Just intention, restraint, and the normal rules of fasting from dawn until sunset.

How to make the intention

The intention is read in the heart at night, before dawn. For Tasua, the Arabic wording is: نَوَيْتُ صَوْمَ غَدٍ عَنْ أَدَاءِ سُنَّةِ التَّاسُوعَاءِ لِلهِ تَعَالَى. The transliteration is: Nawaitu shauma ghadin 'an ada'i sunnatit Tasu'a lillahi ta'ala. The meaning is: I intend to fast the sunnah of Tasua tomorrow for Allah the Almighty.

For Asyura, the wording is: نَوَيْتُ صَوْمَ غَدٍ عَنْ أَدَاءِ سُنَّةِ عَاشُورَاءَ لِلهِ تَعَالَى. The transliteration is: Nawaitu shauma ghadin 'an ada'i sunnati 'Asyura lillahi ta'ala. It means: I intend to fast the sunnah of Asyura tomorrow for Allah the Almighty.

The rules match other daytime fasts. A person refrains from eating, drinking, and anything that breaks the fast from dawn until sunset. Simple, familiar, and for many believers, deeply meaningful.

Muharram’s place in the Islamic calendar

Muharram is one of Islam’s four sacred months, alongside Dzulqa'dah, Dzulhijjah, and Rajab. In the Quran, these months are given special honor, and Muslims are encouraged to treat them with care. Worship carries extra value, while wrongdoing carries greater weight.

That is why Muharram often becomes a month of reflection. Many Muslims use it to renew repentance, increase charity, and make fresh plans for worship after the new Hijri year begins. For Indonesian readers, the date difference between calendars can also affect mosque announcements, family routines, and school-based religious activities.

The practical point is simple. If you follow Kemenag or Muhammadiyah, Tasua falls on June 24, 2026, and Asyura on June 25. If you follow NU, Tasua falls on June 25 and Asyura on June 26. "Choose the calendar you trust, then carry it out with confidence," one religious guide put it, underscoring the same message repeated each year when Muharram arrives.